From the front page of the PDF:
A One-Round D&D LIVING GREYHAWK®
Iuz’s Border States Regional Adventure
Version 1.0

Something bad has happened. Something very bad... and no one seems to be left to tell you the sequence of events. It’s up to you to solve the mystery and find the source. Just try to avoid falling prey to something bad; something very bad. Part 2 of the Machinations plot line. An adventure for investigative PCs, levels 5-13.